The thing is, even most creators who are on Patreon are actually indirectly relying on the ad-funded system currently. Most of these people you're referring to

The thing is, even most creators who are on Patreon are actually indirectly relying on the ad-funded system currently. Most of these people you're referring to are probably Youtube or Twitch creators for example. But why do you think Youtube/Twitch let's them freely upload as much content as they want and have millions of people watch it all for free? You do realize than in an ad-free world, these creators would all have to pay to have their videos hosted in the first place, which is a huge barrier of entry before you even get enough followers to fund your content in the first place. The current variety and depth of creators we have wouldn't have been possible at all without free unlimited video hosting that Youtube has provided all this time. A non-ad-based internet will be filled with rich people who can afford to put their content out there and will cut out everyone else. It's basically like the finance world today, where the rich get richer and the poor can't get their foot in the door.